Guest Stars Megan Mullally voices Gayle Tim Meadows voices Mike Renée Taylor voices Gloria Sam Seder voices Al David Herman voices Customer David Herman voices Ernie H. Jon Benjamin voices Boy H. Jon Benjamin voices Postal Clerk Gary Anthony Williams voices Plant Manager David Herman voices Sorting Clerk David Herman voices Santa Doll Brooke Dillman voices Donna Brooke Dillman voices Girlfriend Melissa Bardin Galsky voices Mother